Elevator-door-operating apparatus.



A. H. OTIS.

ELEVATOR DOVOR OPERATING APPARATUS.

APPLLCAUON H LED OCT. 4. I915.

. Patented J an. 2, 1917.

3 SHEETS-SHEET].

"nun nu nulf IAN/5111701? BY I 6% 3 ATTORNEY A. H. (ms,

ELEVATOR DOOR OPERATING APPARATUS.

APPLICATION FILED OCT. 4, 1915.

- Pamnted Jan. 2, 1917,

3 SHEETS-SHEET 3.

, WITNESSES: l/VVE/V 7'01? M @A/ w @214 MAW-m dam M1 -ARTHUR H. OTIS, 0F

CLEVEL N onzo.

ELEVATOB-DOOR-OPERATING APPARATUS.

Application filed October 4,

T 0 all wkome't may concern:

' Be it'knovvn that I, ARTHUR H. OTIS, a

f citizen of the United States, residing-atshaft.v

Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Elevator-Door- Operating Apparatus, of which the following is a Specification.

My invention relates to improvements indevices for operating elevator doors or gates.

The object of my invention is to simplify and cheapensuch devices and at the same time insure positive operation of the doors under all conditions.

The devices are electrically operated and means are providedto prevent the openingof a door. until the elevator is adjacent to the door to be opened. Means are also provided for automatically closing the door in case ,the operator should fail to close the door before leaving the landing.

Each elevator shaft is provided with a motor for operating a main cable which can be controlled from the car for opening or closing anypne cf the doors of the elevator Other objects of my invention will be pointed out' inthe detail description to fol- V?! l I My invention is illustratedin the accompanying drawings wherein:

Figures 1 and- 2- show the mechanism and circuits for controlling theoperation of the elevator doors. Fig. 3 is an end View or" the plate for carrying the clutch mechanism. Fig. 4 is a modification of Figs. 1 and 2.

Referring to- Figs. 1 and 2, the elevator doors areshown at Band D, with their respective clutching mechanisms shown at The clutching; mechanism is mou? .i on plate- 25. Thisl'plate is grooved on its under surface to engage the guide flflzmd also grooved on its upper surface to-allow the block 1%. free move-' ment in an upward and downward direction. This block 1 2 forms a part of the' cable 12 which is controlled by the motor M. There is one of these blocks for each door and each block serves to present sufiicient surface to be gripped by the clutching mechanism. The clutching mechanism is controlled by the solenoid 15. In operating the solenoid plunger 16 draws .in the two jaws 19 and 20, which are fastened to the pivoted points 23 and 24 of the arms 18. These arms are pivoted or hinged to the'brack'e r Specification of Letters Patent.

ofthe elevator shaft.

1915. Serial No. 53,971.

brace 22 at the point 21 and also hinged or pivoted to the plunger 16 at the point 17. The brace 22 is fastened to the plate 25. .As the plunger of the solenoid is drawn downward the points 23 and 24: move in and cause the jaws l9-and to grip the block.

The plate 25 which carries the clutching mechanism is attached to the cables 200 and 220 as shown. Thecable 200 passes around a pulley 202 fastened to a brace 201 in the elevator shaft. This cable then passes around the pulley 205 which is mounted in the bracket 208. This cable 200 is also attached to the elevator door at 206. of the cable 220 isfastcned to the upper end of the plate 25 and the other end is fastened to the door after passing around the pulleys 20% and 2 08. \Vhen the plate 25' is lifted the cable 200 causes the door D to open. The plate 25 and the clutching mechanism is of SliillClGHt. weight to cause the closing of the door when the jaws l9 and 20 disengage the block 14.

For each door there is an auxiliary clutch controlling mechanism as shown at E and Each one of these mechanisms consists of movable cam 93 supported on the wall ated when the cam 84 beloi'iging to the elewater is directly opposite and the foot lever the elevator under controlofthe operator for determining the direction in which the motor M shall operate to close or open the door. These buttons control the operation of the solenoids and 40 which in turn Patented Jan. 2, 191?.

One end V The cam 93 is open connect the current to the motor M for de tor-mining its. direction of rotation.

The. motor M is provided with a threaded shaft shown at 3. v This threaded shaft ongages or carries with it a threaded collar 2 which moves'whcn the motor rotates.- The two guide rods 10 and 11 areprovidcd for giving this collar 2 additional support. These rods are held in place by the brackets '8 and 9. The collar 2 is provided with an insulated button 5 wh ch ngages the contact springs 6 and 7. These contacts are the elevator door to close.

to operate the motor to cause the cable 12 to change from one position to another.

For purpose of illustration we will assume that door D is to be opened and that the apparatus is'in the position shown in Figs. 1 and 2 (the doors closed and the sleeve 2 in the position shown) and contacts 72 fail.

to operate the solenoid 40 to cause the reversal of the motor. By depressing the button 70 without operating the foot lever X I 'auses the circuit of solenoid -10 to be completed and the motor to operate in a reverse direction to bring the sleeve 2 in its position of rest with the button 5 engaging contacts 7.

\Vhen the operator depresses the foot level-the clutch mechanism operates and the motor M rotates to cause the sleeve 2 to travel until the button 5 engages contacts (3. In a similar manner the, operator -an' depress button 60 and cause the sleeve 2 to assume a different position by operating the motor in a reverse direction. In this event thefoot lever X will be depressed to sever the contacts 72. From this arrangement it will be noted that the operator can at will reverse the position ot the maincable 12 and the sleeve 2 to which it is-attached'.

The operation of the device shown in'Fig. 4 as to the motor control is the same as described in connection with Figs. 1 and 2. Instead of providing a magnetic clutch for gripping the main" cable blocks I use a mechanical clutch which directly grips the main cable.

lVhen the car is opposite the door to be operated the foot lever is operated thus bringing the cam 184 into engagement with the roller 193. Pressure upon the foot lever causes the arm or rod 196 to turn the crank arm 197. The operation of the crank arm causes the segments 119 and 120 to turn and the disks or cams 318 and 319 to grip the main cable.

As soon.as the main cable-is gripped the plate 125 inoves upward or downward depending upon whether the dooris to be opened or closed; The plate in travellng' carries with it the-arm 196 ra'nsing theroller 193 to ride on the cam 184. The cam 184 is of .sutlicient length to cause the complete operation of the door in either direction. When the roller 193 discngages the "am 18-1 the clutch the grip on the cable ceases. The cable' blocks lat (Figs. 1 and 2) can beomitted and the 'jaws 19 and 20 adjusted to directly grip'the cable 12.

While I have illustrated and described the motor as being located at the bottom of the motor located at the top of the shaft.

In Fig. 2 I have shown means for locking or latching the doors. lach plate 35 or shaft, the conditionscan be reversed and the clutching, mechanism will be provided with a latch 210 shown in Fig. 2. This latch pivoted to the plate 25 at 213. The end of the latch 211 normally engages notches 21; in the guide 99 and prevents the opening of the door. The core of the solenoidlfi is provided with 'the extension rod 211, the end otwhich carries a knob 215. \Vhen the solenoid is operated by the operator pressing the foot lever X the knob 215 engages or rides on the cam 21o. causing the end of the latch to disengage the teeth 212.

While I have shown my invention applied to doors of the sliding type, it naturally follows that it is also applicable to doors which are raised and lowered.

Having thus described my invention, what I desire to secure by Letters Patent is:

1. In an apparatus'ot' the class described, an elevator-car, a plurality of doors arranged at different landings. a common controlling means extending to said landings, a motor for operating said common means, an electro-magnetic clutch for each door, means for-operating said clutch to grip said common controlling means when the car is adclutch to grip said common controlling means when the car 15 adjacent to the particular door to be ope 'ated. and means rendered operable after the operation of said clutch for controlling the direction of operation of said motor to move the operated clutch to open or close the particular door,

3. In an apparatus of the class described,

.an elevato1--ca1'., a plurality of doors arranged t, different landingsa [common controlling means extending to said landings, a

motor for ope 'ating said common means, an electro-magne'tic clutch for each door, means for operating said clutch to grip said common controlling means when the car is adjacent to the particular door to beeperated, means comprising a contact device'individual to said elevator car for thereafter ranged at different lal'idi'ngs, a common con starting said'motor to operate the particular door, and means for automatically disabling the motor operating means after the particular door is operated, said disabling ,imeans being controlled bythe operated door. at. ln-an apparatus of the class described,

an elevator-car, a plurality of doors ar 1 ranged at different landings, a common controlling means extending to said' landings, amotor for operating said common-means, an

electron1agnetic clutch for each door, means for operating said clutch to grip said com-' mon controlling means when the ear'is ad'- acent to theparticular door to be operated,

means for thereafter starting said motor in one direction to open said door, and means fo'r operating-said motor in a reverse direction to close said door.

5. In an apparatus of the class described,

an elevator car, a plurality of. doors artrolling means extending to said landings, a motor for operating SHId CO IIHDOIi means, an electro magnetic clutch for each door, means for operating said clutch to grip said common controlling. means when the car is adacent to the particular door to be operated,

means for starting saidniotor td open said door, means for starting said motor in a reverse direction to close said door, and means;

for automatically closing said door in case of failure to operate said motor 'to close said door.

Q; In an apparatus of the class described,

an elevator-car, a plurality of doors ar-'- ranged at different landings, a common controlling means for said doors, a motor individual t0and for operating said common means, an electromagnetic clutch for each. door, means for operating said clutch to bring it ilrengagement with said common controlling means when the car is adJa'cent to the particular; door to beoperated, con

tacts associated with and operated by said clutch-operating means, means controlled through said contacts for placing said motor in operation to open said door, and means an elevator-car, a plurality of doors ar-' also controlled. through said contacts for operating-said motor to close said door,

7. In an apparatus of the class described,

ranged at diflerent landings, a common con- I trolling. means for said doors, a motor individual'to and for operating said common means, an electromagnetic clutch for each door,means for operating said clutch to engage said common controlling means when the .car. is adjacent to the particular doorto 'be operated, electro-i'nagnetic means for operating said vmotor in one direction to open said door, and electromagnetic means for operating 'saidmotor in a reverse directio to close said door. I I v 8.- In an apparatus of the class described,

an elevator-car, a' pluralityof doors arranged at ditlcrent land1ngs,-a common controlling means for said doors, a motor ndividual to and for operating said common means, an electromagnetic clutch for eachdoor, means for operating said'clutch to engage said common controlling means. when 1 the car-is adjacent to the particular door to be operated, electromagnetic means for 'operating said motor inone direction-to open said door, electro-magnetie means for operatingsaid motor in a reverse direction to close said door, and means for disabling said operating means for said motor when said.v

doors are fully opened or closed.

- 9. In an apparatus of the class described,

"an elevator-car,. a plurality of doors arranged at difl'erentlandings, a common controlling-means for said ,doors, a'motor 'in- .divi'dual to and for operating said common means, an electromagnetic clutch for eachdoor,m'eans comprising a set of contacts for :operating 'said .clutchto engage said commen controlling meanswh'en the car is adj a cent to the particular door toibeoperatd, a switch for starting said motor in one direction to open said door, a second switch for operating said motor in a reverse direction to close said door, both of said motor'open' ating means being controlled through the contacts of said clutch operating means.

l0. Inanapparatus oft-he class described,

an elevator-car, a plurality of doors ar ranged at different flandlngs, a controlllng'.

cable extending to said landings, a motor provided with a. threaded shaft, a collar engaging said s'haft andattachedto said conv trolling cable for operating it, an electro .magnetic clutch for each door, means for operating said clutch to grip said cable when the car is adjacent to the particular door to be operated, means for operating said motorto move the operated clutch to operate the particular door.

11. In an apparatus of the class described,

an elevator-car, .a' plurality of doors 'armagnetic clutch for each door, means for operating-"said clutch to grip-said cable when the car is adjacent to theparticular door to be operated, means for thereafter starting said motor to operate the particular door, and means controlled by said collar for disabling-the motor operating means.

- after the particularidoor is operated: I

12. In an apparatus of the class described,

an elevator-car, a plurality of doors arranged at different landings. a controlling cable extending to said'landings a motor having a threaded shaftand carrying a collar to operate said controlling cable, an elees tro-magnetic clutch for eaoh,door, means "0 for operatingsaidclutch to said cable nenneeo when the caris adjacent to the particular door to be operated, means for thereafter operating said motor in one direction to open said door, means for operating said motor in a reverse direction to close said door, and means controlled by said collar for disabling said motor operating means when said door is either fully opened or closed.

13. In an apparatus of the class described, an elevator'car, a plurality of doors arranged at different landings, a controlling cable for said doors, a motor for operating said cable, a clutch for each door, means for operating said clutch to grip said controlling cable when the car is adjacent to the particular door to be operated, means for thereafter operating said motor in one difaction to open said door, and means for operating said motor in a reverse direction to close said door.

ated, eiectro'niagnetic means for operating said Inotr in one direction to open a particular door, and electromagnetic means for operating said motor in a reverse direction to close said door.

In testimony whereof ll aflix my signature in presence of two witnesses.

ARTHUR H. UTIS. Witnesses:

Pom'rsnn, AN NA MCCUNE. 

